Understanding DLI (Daily Light Integral)

DLI is equally as important indoors as in an outdoor/greenhouse environment and should be utilized to optimize your grow efficiency and overall plant health. DLI stands for 'Daily Light Integral' and measures usable light your plant receives over a day. Too high of DLI will cause unwanted light stress or burn and waste money on electricity.
DLI numbers that are too low will limit your plant's growth potential, which can translate directly to reduced yield and plant vigor. Not measuring your DLI and tailoring your light intensity/schedule will cost you in both scenarios. Before we dive into how to measure DLI accurately, let's cover the basics of lighting. Visit Growlink.com to learn more about DLI.